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the Dogs belonging to genera that have already been separated
off. Thus Lycaon is distinctly Thooid. The characters in

question are  these:---In the Fox  series, the  frontal  air-sinus of

the Thooids is absent; the cranial cavity is pear-shaped, without
an abrupt angle coinciding -with the supra-orbital sulcus, such as
exists in the other group ; the coronoid process of the mandible
is rather higher and more turned back in the Foxes, while the
depth of the mandible at the level of the first molar is greater.

FIG. 209.  Japanese Wolf.     Canis hodqphylax.     x ^.     (From Nature.}

To the Fox series belong among others the species C. lagopus
(Arctic Fox), O. zerda, (the Fennec), C, chama (the Silver-backed
Fox of Africa), (7. virginianus (the Virginian Fox), O. velox (the
Kit Fox), and of course the Common Fox of this country. On
the other hand, the Dogs proper (such as C. dingo), the Wolves
(<Z lupus, C. pallipes, <7. niger), the Japanese "Wolf (<7. hodophylax),
the lied Wolf of America ((7. jubatus), the Jackals (<7. aureus, C.
anthus, etc.), the Prairie "Wolf ({7. latrans), and a number of
American forms, such as O. azarae, its close ally (7. cancrivorus
( = <7. rwfcis), O. artstttrctieus, C. vnagellanicus, etc., . are decidedly
Wolves rather than Foxes,